<template>
  <div class="login_container">
    <div class="login_box">
        <div class="avatar_box">
            <img src="../assets/logo.png">
        </div>
        <div class="login_input">
            <el-form :rules="loginRules" :model="loginForm" ref="loginFormRef">
                <el-form-item prop="username">
                    <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input prefix-icon="iconfont icon-3702mima" type="password" v-model="loginForm.password"></el-input>
                </el-form-item>
                <el-form-item class="btn">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
  </div>
</template>

<script>
export default {
    created() {
        
    },
    data() {
        return {
            loginForm:{
                username:'',
                password:''
            },
            loginRules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
            
        }
    },
    methods: {
        // 重置表单
        resetForm(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
                // console.log(valid);
                if(!valid) return;
            const {data : res} =  await this.$http.post('login',this.loginForm)            
            if(res.meta.status !== 200){
                this.$message.error('登录失败')
            }
            // 1.登录成功之后的token，保存到客户端的sessionStorage中
            window.sessionStorage.setItem('token',res.data.token)
            // 2.通过编程式导航跳转到后台主页，路由地址是/home
            console.log(this.$router);
            this.$router.push('/home')    
            })
        }
        
    },

}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    .avatar_box{
       width: 130px;
       height: 130px;
       border-radius: 50%;
       border: 1px solid #eee;
       box-shadow: 0 0 10px #ddd;
       padding: 10px;
       position: absolute;
       left: 50%;
       transform: translate(-50%,-50%);
       background-color: #fff;
       img{
          width: 100%;
          height: 100%;
          border-radius: 50%;
          background-color: #eee;
       }
    }
}
.el-input{
    width: 420px;
}
.login_input{
    margin-top: 110px;
    margin-left: 15px;
}
.btn{
    display: flex;
    justify-content: flex-end;
    margin-right: 15px;
}
</style>